package 等待线程;

public class Test2 {
    public static void main(String[] args) {
        Thread t1=new Thread(()->{
            for (int i = 0; i < 5; i++) {
                try {
                    Thread.sleep(1000);
                } catch (InterruptedException e) {
                    throw new RuntimeException(e);
                }
            }
            System.out.println("t1结束");
        });

        Thread t2=new Thread(()->{
            try {
                t1.join();
            } catch (InterruptedException e) {
                throw new RuntimeException(e);
            }
            System.out.println("t2结束");
        });

        t1.start();
        t2.start();
        System.out.println("main结束");

    }
}
